Ditching-plow



(No Model.)

Y I. L. OOL'VIN.

DITGHING PLOW.

No. 304,295. Patented Sept. 2, 1884.

N. ezrzns. Phohrhlhngmphur, Walhinghn. v.1;

LATENT Fries.

ISAAC L. COLVIN, OF OLNEY, ILLINOIS.

DITCHING-PLOW.

SPECIFICATION forming part of Letters Patent No. 304,295, dated September 2, 1884.

Applicalion filed May 1, 1884. (Nomorlelj To all whom it may concern:

Be it known that I, ISAAC L. CoLvIN, a citizen of the United States of America, residing at Olney, in-the county of Richlan'd and State of Illinois, have invented certain new and usefullmprovements in Ditching-Flows; and I do hereby declare the following to be a full,

. clear, and exact description of the invention,

part of this specification, Figure 1 is a per spective view of a ditchingplow constructed in accordance with my invention, and Fig. 2 is a longitudinal section of the same.

A represents a sled or traveling frame provided with the side runners, B, and central platform, 0, connecting said runners, the said sled being of a width sufficient to span the ditch in which it is designed the plow shall operate. The rear end of the platform 0 is re-' cessed to receive a tongue, at, of an intermediate frame, D, a pivot-bolt passing transversely through the runners B, platform 0, and tongue to, permitting the vertical play of said intermediate frame on said pivot-bolt with respect to the sled A. Parallel side bars, E, of the intermediate frame, D, extend rearwardly, as illustrated, to receive between them the horizontal portion of the beam F of the ditching-plow, the said beam being pivoted near the rear ends of the bars E by a transverse bolt, 2), as shown in Fig. 2, and by dotted lines, Fig. 1. The intermediate frame, D, carries at its forward end, adjacent to the tongue to, a vertical frame, G, in the headblock 0 of which frame turns a threaded rod, d, the lower end of which is headed to rest in a recess therefor, formed near the forward end of the beam F. -The withdrawal of the headed end of the rod d from the beam-recess is prevented by means of plates 6, secured on the upper side of the beam F and embracing the contracted portionf of the rod d.

A hand-wheel, g, is keyed on the upper extremity of the rod (Z. The beam F is curved and prolonged to form a standard and a curved shoe, H, rear extensions of said shoe being adapted to contact with the sides of the ditch. Oolter-blades 'J are secured at their respective ends to the sides of the lower forward portions of the shoe H, and to the sides of the beam F, between the pivot-bolt b and its forward end. The said colter-blades are curved inward toward each other, as indicated in Fig. 1. Two metal sections, K K, have their lower extended portions, h, bolted on the front face of the upper portion of the shoe H, and are cut away at t' to snugly embrace the beam F, as illustrated in Fig. 1. The said metal sections K K incline rearward from their adjacent edges to constitute deflecting moldboards.

From the foregoing it will be apparent that the arrangement and connection of interme diate frame, D, and sled Apermits the sled to readily pass over uneven ground without conveying the jolting motions so acquired to the said intermediate frame, D. Moreover, by manipulating the hand-wheel g and revolving the threaded rod (2 the forward end of the beam F may be elevated or depressed, and the rear end of said beam, together with its accessories, lifted or lowered in the ditch. As the plow moves forwardin the ditch, the colterblades J cut the earth which lodges between them and forces its way up the front inclined face, to be finally deflected off to either side of the ditch. The shoe-extensions I pack and compress the earth at either side of the ditch.

The lower portion of the front face of the shoe H is preferably faced with a curved metallic plate, m,which is bladed at its lower extremity to present a knife-edge at the front of the shoe H.

I do not limit myself to the precise construction and arrangement of devices for effecting the vertical adjustment of the front end of the beam F, as the same may be modified or altered and still remain within the scope of my invention. Thus, for instance, the

hand-wheel 9 may be in the form of a nut j ournaled in the headc, and by the revolution of mediate frame provided at its front with a projecting tongue engaging a pivot-bolt 011 the main sled or carriage, a beam pivotally secured at the rear end of the intermediate frame, and carrying the ditching-plow at its rear, avertical frame supported at the front of the intermediate frame, and provided with a vertically-traveling threaded rod engaging the front end of the said beam, and hand de- I vices for rotating said rod, substantially as specified.

3. The combination, in aditehing-plow constructed and arranged substantially as set forth, of a beam, F, terminating at its lower end in a shoe, H, and curved eolter-blades secured to the sides of said shoe and beam, as and for the purpose set forth.

4. The combination, in a ditching-plow arranged and constructed substantially as described, of a beam terminating at its rear end in a shoe, H, provided with the parallel rearward extensions I, and having the moldboards K, as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

ISAAC L. OOLVIN.

Witnesses:

HARRISON M. SPAIN, JOHN J. RIDER. 

